Coalville, UT 84024 Frost Dates
Frost dates for Coalville, UT, ZIP 84024
Around 05/30 is the usual last spring frost, about 275 days away. The first fall frost typically arrives around 09/18, about 112 frost-free days later.
Zone 6a (-10 to -5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Coalville, not a forecast for this year.
What to do before the first frost
Zone 6a around Coalville has about 3 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Coalville's last frost
05/30 is the middle of 30 years of NOAA records, not a promise. Plant by 05/11 and you're betting against frost in roughly 9 years out of 10. 06/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Coalville compares
Coalville's growing season runs about 112 days, ranking 39,423 of 40,283 US ZIP codes measured here, longest to shortest. Within UT, it ranks 316 of 344.
Learn more
the frost range explains how to read the range around Coalville's dates instead of trusting one, and local microclimates explains what one yard in Coalville can differ from the 84024 normal.